Alexander hill mo yes



(No Model.)

A. H. MOYES.

SGREW JACK.

Patented July 7, 1896.

INVENTOR W/ TNE SSE S:

ATTOHNEYS.

UNITED STATES PATENT OEEicE.

ALEXANDER lllLL MOYES, OF OGDEN, UTAH, ASSIGNOR, LY DIRECT AND MESNE ASSIGNMENTS, TO THE OGDEN TRAIN-JACK AND MANUFACTUR- ING COMPANY, OF SAME PLACE.

SCREW-JACK.

SPECIFICATION forming part of Letters Patent No. 563,608, dated July 7, 1896.

Application filed November 2, 1895. Serial No. 567,698. (No modeli To all whom it may concern.- or down in the casing A, thus reducing the Be it known that I, ALEXANDER llILL friction to a minimum.

MOYES, of Ogden, in the county of Veber In order to prevent dust from passing to and Territory of Utah, have invented a new the balLbearing, I provide the under side of and Im proved ScrewJack, of which the folthe cap D with an annular flange D fitting 5 5 lowing is a full, clear, and exact description. over the upper end of the head B, as is The object of the invention is to provide a plainly illustrated in Fig. 2.

new and improved jack which is simple and On the casing A is fitted loosely a sleeve durable in construction, very effective in op- E, provided on one side with a handle F for w oration, and more especially designed for use conveniently carrying the screw-jack about on railroad-cars for conveniently jacking up and for turning the said sleeve on the casing cars, engines, journal-boxes, and other arti- A whenever it is desired to hold a wheel cles and devices. down to the rail, as indicated in Fig. 2.

The invention consists of certain parts and On the sleeve E is formed an extension E 1 5 details and combinations ofithe same, as will located opposite the handle F and containbe fully described hereinafteigand then pointing a pin or bolt G, adapted to be moved outed out in the claims. ward to engage the inside of the rim of the Reference is to be had to the accompanying car-wheel, as is plainly shown in Fig. 2. On drawings, forming a part of this specification, the bolt G is secured a transverse]y-extend- 20 in which similar characters of reference indiing pin H, passingthrough longitudinal slots cate corresponding parts in all the figures. F formed in the sides oi the extension F so Figure 1 is a side elevation of theimproveas to prevent the bolt G from turning. The ment. Fig. is a sectional side elevation of pin ll extends beyond the sides of the extenihe same on the line of Fig. 3 and as sion E to permit the operator to conven- 25 applied for holding the wheel down on the iently take hold of the said pin to shoot rail. Fig. 3 is a plan view of the same; and the bolt G outward or back into an innermost Fig. i is a plan view of a head of the screwposition, as illustrated in Fig. 1. post, showing the ball-bearing. In the extension E is fulcrumed a weighted The improved screw-jack is provided with pawl 1, adapted to engage one of a series of 30 a casing A, preferably made cylindrical and circular teeth A formed on the outside of provided at its lower end with a base A, the casing A to lock the sleeve F and bolt G adapted to rest on the ground, railroad-tie, in a lowermost position at the time the said or other suitable support. The casing A is bolt G engages the inside of the wheel-rim, as formed with an interior screw-thread engaged shown in Fig. 2.

35 by a threaded post 13, formed at its upper end By the arrangement described the sleeve E with. a head l3, provided with the usual transcan be conveniently moved up or down on verse openings B, adapted to be engaged by the casin g A, so as to bring the bolt G into a lever or by another suitable tool for eonthe proper position to engage the inside of veniently turning the screw-post B up or the wheel-rim.

40 down in the casing A. I The operation is as follows: hen it is de- In the top of the head B is secured a pivotsired to raise an object, the screw-post B is pin O, on which is mounted to turn a cap D, moved into a lowermost position to bring the adapted to engage the article to be lifted, the cap D under the article to be raised, and then said cap being provided on its under side the operator turns the head D, as previously 5 with an annular groove D, engaging the top described, to screw up the screw-post D in 9 5 of balls E, held in an annular groove 15, the casing A. The cap D, in engaging the formed in the top of the head B. By this arunder side of the article to be raised, remains rangeinent a ball-bearing is interposed 'bestationary during the rest of the operation, tween the head 13 and the cap D, so that the as the screw-post, by the interposed ball-bear- 50 screw-postli can be conveniently screwed up ing, will readily rotate without rotating the cap D, and at the same time the friction between the turning screw-post and the now stationary cap D is reduced to a minimum.

Owing to the arrangement described for holding the wheel down to the rail, it is not necessary to use blocks and similar devices, as are now employed.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. A jack, comprising a casing, a lifting device carried thereby, a transverse sleeve held on the casing at an invariable angle thereto, and a pin slidable in said sleeve toward and from the casing, the free end of the pin being adapted to engage a car-wheel, substantially as described.

2. A jack provided with a casing, a sleeve held loosely on said casing, a bolt held in said sleeve and adapted to engage the wheel-rim to hold the wheel down on the rail while jacking up the journal, and a pawl held on said sleeve and adapted to engage one of a series of circular teeth formed on the exterior of the said casin g, substantially as shown and described.

3. A screw-jack comprising a casing pro- Vided with a base and formed with an interior screw-thread and exterior circular threads, a screw-post screwing in the said casing and provided at its upper end with a head, a cap screw-thread and exterior circular threads, a

screw-post screwing in the said casing and provided at its upper end with a head, a cap mounted to turn on the said head, a ball-bearing interposed between the cap and head. a sleeve held loosely on the said casin g and provided with a handle and an extension, a bolt fitted to slide in the said extension and adapt ed to engage the inside of the wheel-rim to hold the wheel down on the rail while jacking upthe journal-boxes, and a weighted pawl pivoted on the sleeve and adapted to engage one of the said exterior circular threads on the casing, substantially as shown and described.

T. D. JOHNSON, WILLIAM BUSH COURTNEY. 

